HOBO® 4-Channel External Logger

Brooke Clarke 2000 - 2007

This is a small battery powered data logger with 4 analog inputs
each
takes
0 to +2.5 volts. It is powered by a CR2032 3 volt Lithium
button
battery. The "Boxcar" software package is required to "launch"
(set
up the sampling rate, which channels are active, etc.) the Hobo and
to
read back it's data.
Radio Shack can order as RSU12045522 or get from Onset
Computer Corporation - HOBO®
4-Channel
External Logger -

NOTICE

Using Readout on the 4-Channel unit stops the data logging.
The
instructions
are clear that launching the unit will clear the memory, but if
reading
the data stops the logging function that's the same as clearing the
data
because to get it going again you need to launch it!

The inputs have 2.5mm stereo audio jacks.

2.5mm Plug is Tech
America
910-0727 in catalog but may not be on their web site

Hobo to Computer Cable

The cable that comes with the Boxcar software package
has a
3.5mm stereo audio plug ( Digikey
CP-3502-ND, Tech America
910-0754)
to connect to the Hobo and a DB9(f) that connects to the computer
serial
port (DB9(m). CUI Stack carries both
2.5mm jacks
and 3.5mm jacks
-